Adsorption structures of NO on Pt(111) studied by the near edge X-ray absorption fine structure spectroscopy

被引：22
|
作者：
Zhu, P [1 ]
Shimada, T [1 ]
Kondoh, H [1 ]
Nakai, I [1 ]
Nagasaka, M [1 ]
Ohta, T [1 ]
机构：
[1] Univ Tokyo, Dept Chem, Grad Sch Sci, Bunkyo Ku, Tokyo 1130033, Japan
来源：
SURFACE SCIENCE | 2004年 / 565卷 / 2-3期
基金：
日本学术振兴会;
关键词：
nitrogen oxides; platinum; chemisorption; X-ray photoelectron spectroscopy; near edge extended X-ray absorption fine; structure (NEXAFS);
D O I：
10.1016/j.susc.2004.07.013
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Near edge X-ray absorption fine structure (NEXAFS) spectra were measured and analyzed to reveal the adsorption structures of NO on Pt(I 11) at 290 and 230 K. N K-edge NEXAFS spectra show a single pi* resonance at 290 K, while they exhibit double peaks at 230 K. Simple polarization analysis cannot be applied to such a complicated system. Simulations based on the multiple scattering theory confirmed that NO is uniquely adsorbed at the hollow site at 290 K and there are two kinds of adsorption species at 230 K: one at atop site with a tilt angle of about 50degrees and another at hollow site with upright direction. They are in close agreement with the results by recent LEED IIV analysis. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：232 / 242
页数：11
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